Suzuki GSX1300BK B-King Service Manual page 151

1A-80 Engine General Information and Diagnosis:
Step
2 6) Disconnect the ECM coupler. Refer to "ECM Removal
and Installation in Section 1C (Page 1C-2)".
7) Check the continuity between the Y/W wire and terminal
"20". Also, check the continuity between the B/Br wire
and terminal "29".
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Continuity test (
ECM couplers (Harness side)
(B)
"20"
Is the continuity OK?
Action
)
(A)
"29"
(Gray)
(Black)
Yes
Go to Step 3.
I823H1110065-05
No
Y/W wire shorted to
VCC, or B/Br wire open.